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Contrasting Evidence Within and Between Institutions That Provide Treatment in an Observational Study of Alternate Forms of Anesthesia
In a randomized trial, subjects are assigned to treatment or control by the flip of a fair coin. In many nonrandomized or observational studies, subjects find their way to treatment or control in two steps, either or both of which may lead to biased comparisons. By a vague process perhaps affected b...
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| Опубликовано в: : | J Am Stat Assoc |
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| Главные авторы: | , , , |
| Формат: | Artigo |
| Язык: | Inglês |
| Опубликовано: |
2012
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| Предметы: | |
| Online-ссылка: | https://ncbi.nlm.nih.gov/pmc/articles/PMC4673003/ https://ncbi.nlm.nih.gov/pubmed/26664027 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1080/01621459.2012.682533 |
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